• 한국식품과학회지
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• 제41권2호
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• pp.141-145
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• 2009

청육장은 볶은 대두를 이용하여 제조된 청국장에 해산물, 육류를 함께 가열한 반가 식품의 일종이다. 140과 220$^{\circ}C$에서 각각 21.0과 6.0분 간 볶은 대두와 이를 이용한 청국장, 청육장의 총 아이소플라본을 HPLC로 분석하였다. 총 아이소플라본 함량(${\mu}$mol/g)은 생 대두 대비 약 79-80, 56-65, 47-50%이었다. 볶음 공정으로 인해 malonyl-${\beta}$-glucosides 함량은 유의적으로 감소한 반면 acetyl-${\beta}$-glucosides와 ${\beta}$-glucosides의 함량은 유의적으로 증가하였다(p<0.05). 청국장과 청육장의 주된 아이소플라본은 ${\beta}$-glucosides 이었다. 생 대두와 볶은 대두에서는 succinyl-${\beta}$-daidzin과 succinyl-${\beta}$-genistin은 검출되지 않았고, 청국장과 청육장에서 succinyl-${\beta}$-genistin의 peak area는 succinyl-${\beta}$-daidzin 보다 더 높게 검출되었다.

• 한국식생활문화학회지
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• 제31권6호
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• pp.643-651
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• 2016

This study was investigated the difference in the quality characteristics of the fermented soybean roasted with different conditions for making chungyukjang. Roasted condition of soybean was decided by pre-test, which was on $140^{\circ}C$ for 21 min, $180^{\circ}C$ 9.5 min, and $220^{\circ}C$ 6 min. Fermented soybean with different roasted condition and conventionally made cheonggukjang were measured for proximate composition, color, pH, amino nitrogen, ammonia nitrogen, free sugar and amino acids. The lightness and yellowness of soybean fermented by conventional method was higher than those of the fermented soybean with roasted soybean. The contents of free sugar of fermented soybean roasted on $220^{\circ}C$ for 6 min (FS220) was the highest among the group and followed by fermented soybean roasted on $180^{\circ}C$ for 9.5 min (FS180), $140^{\circ}C$ 21 min (FS140) and conventional cheonggukjang (FS0). The contents of total free amino acid was highest on fermented soybean roasted on $140^{\circ}C$ for 21 min (FS140) and followed by fermented soybean roasted on $180^{\circ}C$ for 9.5 min (FS180), $220^{\circ}C$ 6 min (FS220) and conventional cheonggukjang (FS0).